Aroused sweetheart went off, broken by woman’s rebuff (4,4)

I believe the answer is:

turn down

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But I can't explain it at all! Could you help me understand?

(Other definitions for turn down that I've seen before include "Lower volume" , "Reject - reduce volume" , "Refuse - to reduce the volume" , "Spurn" , "prepare bed" .)

I've seen this clue in The Hindu.

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